Two weeks ago we built our 10ft long by 4 1/2ft wide coop, and got 2 jersey giants from a friend of mine. They are both 5 yr old hens who are very friendly and docile. The zoo is selling their 2 year old silkie hens, and I am thinking of getting one, but I worry they won't all get along. I don't want a rooster, because I am new to the world of chickens and I heard they can be mean. I am not keeping the chickens for meet or a ton of eggs either... They are more like pets. Is it safe to add one more, or too risky?? Any advice is greatly appreciated!